BS
’
78
·
Chemistry
In Memoriam
![Fred Hayos](https://alumni.caltech.edu/wp-content/uploads/2024/06/fred-hayos.jpeg)
Fred Hayos
MA
’
51
![Keith Kohnen](https://alumni.caltech.edu/wp-content/uploads/2024/06/keith-kohnen-1080x675.jpeg)
Keith Kohnen
BS
’
49
·
Mechanical Engineering
Gary Zieve
BS
’
73
Byron B. Johnson, Jr.
BS ’56
Dale R. Simpson
MS ’58 | PhD ’60
Robert J. Mackin Jr.
MS ’51 | PhD ’53
George Norton Oetzel
BS ’58
Frederick Martin
BS ’55
Maurice L. Whitaker
EX ’55
Fred B. Hagedorn
PhD ’57
Howard W. Bloomberg
BS ’57